Device and method for aiding the positioning of an external part relative to an implantable part of a charging system for an implantable medical device
First Claim
1. Device for aiding the positioning of an external part relative to an implantable part of a charging system for charging a rechargeable power source of an implantable medical device comprising,an external transmitting part including a transmitting resonant circuit with a transmitting coil;
- an implantable receiving part including a receiving resonant circuit with a receiving coil, said transmitting coil being adapted to be inductively coupled to said receiving coil by manual positioning of said external transmitting part thereby allowing transcutaneous power transmission;
an oscillator connected to said transmitting resonant circuit, said oscillator having a resonant frequency which shifts as a function of the inductive coupling between said transmitting coil and said receiving coil;
a measurement arrangement for determining frequency detuning of said oscillator; and
an evaluation arrangement for outputting a positioning signal as a function of the determined frequency detuning of said oscillator.
2 Assignments
0 Petitions
Accused Products
Abstract
The invention relates to a device and a method for aiding the positioning of an external transmitting part relative to an implantable receiving part of a charging system for charging a rechargeable power source of an implantable medical device such as an implantable hearing aid. The external transmitting and the implantable receiving part each has a resonant circuit with a transmitting coil and a receiving coil respectively. These coils can be inductively coupled to one another by corresponding manual positioning of the external transmitting part for transcutaneous power transmission. The external transmitting part is provided with an oscillator which is connected to the transmitting resonant circuit and the oscillator has a resonant frequency which shifts as a function of the coupling between the transmitting coil and the receiving coil. The external transmitting part is also provided with a measurement arrangement for determining the frequency detuning of the oscillator and an evaluation arrangement for outputting a positioning signal as a function of the determined frequency detuning of the oscillator.
-
Citations
25 Claims
-
1. Device for aiding the positioning of an external part relative to an implantable part of a charging system for charging a rechargeable power source of an implantable medical device comprising,
an external transmitting part including a transmitting resonant circuit with a transmitting coil; -
an implantable receiving part including a receiving resonant circuit with a receiving coil, said transmitting coil being adapted to be inductively coupled to said receiving coil by manual positioning of said external transmitting part thereby allowing transcutaneous power transmission; an oscillator connected to said transmitting resonant circuit, said oscillator having a resonant frequency which shifts as a function of the inductive coupling between said transmitting coil and said receiving coil; a measurement arrangement for determining frequency detuning of said oscillator; and an evaluation arrangement for outputting a positioning signal as a function of the determined frequency detuning of said oscillator. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
-
-
21. A method for aiding the positioning of an external part relative to an implantable part of a charging system for charging a rechargeable power source of an implantable medical device comprising the steps of:
-
providing an external transmitting part including a transmitting resonant circuit with a transmitting coil; providing an implantable receiving part including a receiving resonant circuit with a receiving coil; inductively coupling said transmitting coil with said receiving coil by positioning said external transmitting part to allow transcutaneous power transmission; providing an oscillator connected to said transmitting resonant circuit, said oscillator having a resonant frequency which shifts as a function of the inductive coupling between said transmitting coil and said receiving coil; determining frequency detuning of said oscillator; and outputting a positioning signal as a function of the determined frequency detuning of said oscillator thereby allowing evaluation of the positioning. - View Dependent Claims (22, 23, 24, 25)
-
Specification